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    Re: Lunerian Apprenticeship
    From: Francis Upchurch
    Date: 2017 Jan 9, 03:28 -0800

    David C,

    Update, correction on lunar clearnce.

    Using conventional corrections (not the special AH ones), and  your observed readings I  now  get LDo 36°57.4' with the Karl Cosine and LDo 36°58.3' with the Thompson compared to Frank's 36°57.5'. 

    So I think the anomally relates mostly  to my use of the AH modified corrections. 

    Interestingly, the Thompson result is the same with either type of correction ,presumably because it does  not require Ho and especially ho, where most of the differences in corrections occur.

    I assume that Frank's site calculator does not do this, so using normal corrections I get similar  results with cosine formula as Frank. (well 0.1' out)

    So perhaps Frank could advise about how to deal with artifical horizons and lunar clearance?

    Best wishes

    francis

       
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